Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Willy Wolfli"'
Autor:
Shawki M Nakhla, Mark Lehner, Herbert Haas, John Nolan, Georges Bonani, Robert J. Wenke, Zahi Hawass, Willy Wolfli
Publikováno v:
Radiocarbon. 43:1297-1320
Between 1984 and 1995 over 450 organic samples were collected from monuments built during the Old and Middle Kingdoms. The most suitable samples were selected for dating. The purpose was to establish a radiocarbon chronology with samples from secure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b291dfd9d6684242315b59e89d43d379
https://doi.org/10.1017/s0033822200038558
https://doi.org/10.1017/s0033822200038558
Publikováno v:
Journal of Archaeological Science. 24:1045-1050
Carved wooden panels and beams from the Al-Aqsa Mosque, built in Jerusalem in the 8th century ad , were identified botanically and dated by 14 C AMS technique. The results were examined against historical, ornamental and epigraphical evidence. It was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44f7c69e350fab73558fa1dbd91d14ab
https://doi.org/10.1006/jasc.1997.0183
https://doi.org/10.1006/jasc.1997.0183
Autor:
Hansjakob Hofmann, T. Hahn, H.-J. Lange, Willy Wolfli, P. W. Kubik, Beate Dittrich-Hannen, Marc J.-F. Suter, U. Herpers, Rolf Michel, Th. Schiekel, R. Rösel
Publikováno v:
Applied Radiation and Isotopes. 46:93-112
In order to provide thin-target cross sections as a basis for model calculations of the interactions of solar and galactic α-particles, irradiation experiments with α-particles were performed at the injector cyclotron at PSI/Villigen ( E max = 119.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e4e41577289c5c9ab6760df9964b516
https://doi.org/10.1016/0969-8043(94)00124-i
https://doi.org/10.1016/0969-8043(94)00124-i
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 92:194-200
The accuracy of radiocarbon dating depends both on the accuracy of the radiocarbon measurements and the time dependent fluctuations of the 14C concentration in the atmosphere of the past. A numerical procedure has been developed to study the influenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e95b963a238adf34890c45b84749355
https://doi.org/10.1016/0168-583x(94)96004-6
https://doi.org/10.1016/0168-583x(94)96004-6
Autor:
P. Malmborg, Marc J.-F. Suter, R. Bodemann, Rolf Michel, B. Holmqvist, H. Condé, B. Dittrich, U. Herpers, Ingo Leya, Hansjakob Hofmann, Th. Schiekel, R. Rösel, H.-J. Lange, Willy Wolfli
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 82:9-31
Cross sections for the production of residual nuclides by p-induced reactions are the basic nuclear quantities for an accurate modelling of the interaction of solar cosmic protons with matter. In a series of irradiation experiments at the cyclotron o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb399bc2ad5b9671a8ae1b4474d5d1c0
https://doi.org/10.1016/0168-583x(93)95077-i
https://doi.org/10.1016/0168-583x(93)95077-i
Autor:
R. Bodemann, Narendra Bhandari, Hansjakob Hofmann, K. Bremer, H.-J. Lange, M. N. Rao, K. J. Mathew, S. Vogt, U. Herpers, Rolf Michel, Willy Wolfli
Publikováno v:
Geochimica et Cosmochimica Acta. 57:2361-2375
Depth profiles of the cosmogenic isotopes 3He, 20e, 21Ne, 22Ne, 10Be and 26A1 have been measured by conventional and accelerator mass spectrometry in the chondrites Madhipura, Udaipur, and Bansur. Shielding depths of the samples and meteorite sizes w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aff9ac07a6bf162364849b730c32cee
https://doi.org/10.1016/0016-7037(93)90574-g
https://doi.org/10.1016/0016-7037(93)90574-g
Publikováno v:
Geochimica et Cosmochimica Acta. 57:205-217
Measurements of 230Th, 231Pa, and 10Be in sediment trap samples and Holocene sediments collected along a transect in the northeastern Pacific indicate that the removal of these nuclides from the ocean is greatly influenced by boundary scavenging. Mor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97437bfe885c829fb3596ebcba930381
https://doi.org/10.1016/0016-7037(93)90479-g
https://doi.org/10.1016/0016-7037(93)90479-g
Autor:
Y. Lao, Susan E. Trumbore, Hansjakob Hofmann, Robert F. Anderson, Willy Wolfli, Wallace S. Broecker
Publikováno v:
Earth and Planetary Science Letters. 113:173-189
An ocean-wide study of the rates of removal of10Be and231Pa in the Pacific Ocean has identified intensified scavenging of the10Be and231Pa in several ocean margin areas, including the Northeastern and Northwestern Pacific, the Bering Sea, the Eastern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::879b6f83981b550917a07ec514d366d1
https://doi.org/10.1016/0012-821x(92)90218-k
https://doi.org/10.1016/0012-821x(92)90218-k
Autor:
Robin Schäublin, M. Victoria, U.S. Fischer, Max Döbeli, M. Alurralde, Willy Wolfli, H. Rühl, S. Schwyn, M. Suter, Rolf Gotthardt
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 68:249-252
A three-axes goniometer with an x−y sample stage for application in ion beam channeling has been constructed. The fully computer controlled goniometer is driven by optically encoded dc-motors that are located within the vacuum system. The angular p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17031a22b0338d23624c1f47e630e2b9
https://doi.org/10.1016/0168-583x(92)96086-e
https://doi.org/10.1016/0168-583x(92)96086-e
Autor:
Willy Wolfli, Shen Chengde, J. Beer, Hans Oeschger, Marc J.-F. Suter, G. Bonani, Liu Tungsheng
Publikováno v:
Earth and Planetary Science Letters. 109:169-177
We report a first series of10Be measurements on Chinese loess covering the last 750,000 years. The10Be concentration shows a tendency to decrease with increasing grain size. Leaching experiments with acid solutions show that10Be is strongly bound to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::225b0b9ad3d374077fac13d0e1d27f1b
https://doi.org/10.1016/0012-821x(92)90081-6
https://doi.org/10.1016/0012-821x(92)90081-6